Valve



April 26,- 1932.

F. E. SACKRIDER ET AL v VALVE Filed 0d. 4, 19 50 I/vuenZ'ons,

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Patented Apr. 26, 1932 UNITED STATESPATENT OFFICE FRANK E. SAGKRIDER,JOHNNIE M. CONN, AND JESSE CALVERT, OF OKLAHOMA CITY, OKLAHOMA VALVEApplication filed October 4, 1930. Serial Na 486,476.

This invention relates to valves and more particularly for operatingmechanism for valves.

Experience has indicated that in many sitnations it is desirable thatthe operating mechanism for a valve shall not be exposed to the contentsof the system controlled by the valve. Further experience has indicatedthat a direct reciprocating movement of a valve stem without rotation isdesirable as increasing the life of the valve stem and packings and alsoassuring a tighter fit and more accurate operation of the parts.

The present invention is directed to providing an improved andsimplified valve operating mechanism in conjunction with a housingadapted to serve as a closure for a port in the valve casing and inwhich said mechanism is located in a grease tight chamber, capable ofholding a suitable lubricant. This mechanism is further provided withanti-friction bearings and is of a character lending itself to a readytaking up of wear in the parts.

The object of the present invention is to provide a device of thecharacter indicated and as hereinafter more particularly specified. Theinvention consists in the novel construction, arrangement andcombination of parts hereinafter particularly described and claimed.

One sheet of drawings accompanies this specification in which likereference characters indicate like parts throughout.

Figure 1 is a vertical cross section through the improved device appliedto a standard valve structure.

Figure 2 is a horizontal cross section taken on line 22 of Figure 1.

Figure 3 is a horizontal cross section taken on line 3-3 of Figure 1.

Figure 4 is an enlarged fragmentary vertical cross section similar toFigure 1 but on a larger scale. 7

Referring to the drawings: 1 indicates a valve housing of standardconstruction having attachment flanges 22, a wall 6 provided with avalve seat 5, a valve 3 mounted on a valve stem 4 and adapted to bereciprocated into and out of association with valve seat 5.

A port 10 is provided in the valve housing which as is customary, is inalignment with valve stem 4, through which port 10 the said stem 4extends.

The present invention is directed to the valve stem operating mechanismwhich comprises a housing member 7 provided with an end wall 8 adaptedto seat over port 10 and be secured to the valve housing 1 constitutinga closure for said port.

A suitable orifice 11 is provided in wall 8 through which valve stem 4extends and a packing gland 12 may be provided to assure tightnessaround the valve stem at this point.

In the upper part of the housing member 7 is provided a chamber 14 inwhich is slidably positioned a rack member 16, which rack 16 is attachedto or if desirable made integral with valve stem 4. In an extension 17of chamber 14 adjacent to rack 16 is positioned a worm 18, the threadsof which are adapted to engage the teeth of the rack. Suitable ballbearing devices 20-20 are positioned to support worm 18, which worm ismounted upon a stem 19, which extends above housing 7 and is provided atits end with operating wheel 25. A'spacer sleeve 21 is positioned aroundstem 19 within chamber 17 to properly position worm 18 and is held inposition by a top closure member 24 which also operates to closechambers 14 and 17.

A port 23 is provided with a suitable screw closure member to permit theintroduction of a lubricant into chambers 17 and 14, in which lubricantrack 16 and worm 18 normally operate. A number of roller bearings 15 arepositioned between rack member 16 and the wall of chamber 14 opposite toworm 18 to provide an anti-friction slide and bearing for rack 16.

Various modifications in the exact construction and arrangement of partswill readily suggest themselves to those skilled in the art but withinthe scope of our invention as claimed.

Having thus fully described our invention, we claim: 7

1. In a valve a combined housing and bonnet member, said housing havinga chamher, a rack in said chamber, a Worm in said chamber, and meansassociating the rack with the valve stem, said chamber adapted to hold alubricant in which the worm and rack operate.

2. The structure of claim 1 with anti-friction rollers disposed in thechamber between the rack and the Wall of the chamber opposite the Worm.

In testimony whereof We afiix our signatures.

FRANK E. SAGKRIDER. JOHNNIE M. CONN. vJESSE V. CALVERT.

